Products

  • 3/4 OD x 48 Length Redline Gauge Glass redline glass tube

    3/4 OD x 48 Length Redline Gauge Glass redline glass tube

    Qingdao Link Glass can offer as Red Line, Standard, Heavy Wall, High Pressure, Diameters range from 1/2″ OD to 1 1/2″ OD. End finishes may be cut, ground, or fire polished depending on application. Pressure ratings is depending on end finish, diameter, and length required. Heat resistant up to 400 degree centigrade(borosilicate glass) and 1100 degree centigrade(quartz glass).

    Tubular sight glass is also be named Glass tube, Glass pipe, tubular sight glass, Tubular gauge glass in many country, can be divided into standard size and heavy wall size according to the wall thickness. The standard size tubular glass is commonly used in low pressure boiler, tanks and some other low pressure instruments. The heavy wall kind is suitable to high pressure environment, such as crude oil and water, gas flowmeter or acid and alkali containers.
    The material of tubular sight glass
    1)borosilicate glass tube
    2)quartz glass tube
    Borosilicate glass tube and quartz glass tube can work in the acid and alkali media, at the same time borosilicate glass and quartz glass can bear in high pressure and temperature environment.
    Specification
    • Material: soda-lime glass, borosilicate glass, quartz glass.
    • Classification: standard, heavy wall.
    • Wall thickness: 1-30 mm.
    • Inside diameter: 1-100 mm.
    • Outside diameter: 2-150 mm.
    • Length: 30-300 mm.
    • Max working temperature: 1100 °C.
    • Max working pressure: 400 bars.
    Features and Advantages
    • Corrosion resistance
    Glass material have stable chemical property. We have quartz glass and borosilicate glass for aggressive working environment.
    • High working temperature and pressure
    Our standard size tubular gauge glass is suitable in no pressure and low temperature environment. Our heavy wall kind tubular gauge glass can work safely in high pressure and high temperature environment for a long time.
    • We can draw a red line on the tubular sight glass
    The red line on the tubular sight glass can make the liquid level more clear for reading.
    • Precise dimension
    We can customize the tubular gauge glass according to the required dimension. We can achieve ±0.01 mm tolerance for accurate instruments application.
    • Easy to clean
    The tubular gauge glass can be cleaned easily by water. With suitable cleaning, the tubular gauge glass can be used as long as 10 years.
    Application
    1. Household electrical appliance
    2. Environmental engineering and chemical engineering
    3. Lighting
    4. Solar Energy
    5. Fine instruments
    6. Semi-conductor technology
    7. Medical technique and bio-engineering;
    Polycarbonate tube:
    max work temperature 120°C
    can resist weak acid,weak base.
    Can be yellow in the sunshine long time

  • Liquid Level Gauge Sight Glass G3/4 Male Threaded Brass Air Compressor Fittings with O-Ring

    Liquid Level Gauge Sight Glass G3/4 Male Threaded Brass Air Compressor Fittings with O-Ring

    Body material: aluminum alloy
    Observation window: tempered glass
    Sealing material: NBR/FKM O Ring
    Gasket material: Plexiglas gasket
    Work temperature:-40 to 100 degree centigrade; -20 to 180 degree centigrade

  • Liquid Level Gauge Sight Glass G1/2 Male Threaded Brass Air Compressor Fittings with O-Ring

    Liquid Level Gauge Sight Glass G1/2 Male Threaded Brass Air Compressor Fittings with O-Ring

    Body material: aluminum alloy
    Observation window: tempered glass
    Sealing material: NBR/FKM O Ring
    Gasket material: Plexiglas gasket
    Work temperature:-40 to 100 degree centigrade; -20 to 180 degree centigrade

  • Male Aluminum Alloy Oil Level Sight Glass Window for Air Compressor Gearbox Pump Tank

    Male Aluminum Alloy Oil Level Sight Glass Window for Air Compressor Gearbox Pump Tank

    Body material: aluminum alloy
    Observation window: tempered glass
    Sealing material: FKM O Ring
    Gasket material: Plexiglas gasket
    Work temperature: -20 to 180 degree centigrade

  • Screw type sight glass,304 stainless steel oil sight glass, industrial grade sight glass

    Screw type sight glass,304 stainless steel oil sight glass, industrial grade sight glass

    Name: Screw type sight glass,304 stainless steel oil sight glass, industrial grade sight glass
    Operating temperature: -40 degrees to 200 degrees
    Body structure: single pressure
    Chamber fittings: straight through
    Installation mode: threaded
    Transmittance: 90%
    Material: Carbon steel
    Size: DN10 – DN600
    Nominal pressure: greater than 6Mpa

  • Sanitary spherical sight glass, quick-mounting type sight glass, 360° view glass tube type sight glass

    Sanitary spherical sight glass, quick-mounting type sight glass, 360° view glass tube type sight glass

    Sanitary spherical sight glass, quick-mounting type sight glass, 360° view glass tube type sight glass, fluid pipe is composed of stainless steel structure and glass. In the food processing, cosmetic, pharmaceutical, and refinement industries, the flow of materials can be clearly and precisely observed through it. It is one of the main accessories on the industrial pipeline device. In the pipeline of petroleum, chemical, medicine, food and other industrial production devices, the mirror can observe the flow and reaction of liquid, gas, steam and other media in the pipeline at any time, so as to monitor production and avoid accidents in the production process.

  • 3/4″ NPT Stainless Steel 304 Sight Water Flow Indicator Sight Glass

    3/4″ NPT Stainless Steel 304 Sight Water Flow Indicator Sight Glass

    - Specifications: DN6-DN50

    - Pressure: 0.6/1.0/1.6/2.5/4.0mpa – Material: stainless steel, carbon steel

    - Impeller: metal manufacturing/tetrafluorogenic manufacturing/red basket two colors can be selected, with high visibility effect.

    - Medium: water, oil, gas and acid, alkaline liquid or toxic gas

    - Maximum operating temperature: 200℃

    - Installation: horizontal, erect, easy to observe and clear.

    - Connection type: internal thread

  • Fluorinated Silicone Rubber O-Ring FVMQ

    Fluorinated Silicone Rubber O-Ring FVMQ

    Fluorinated Silicone Rubber O-ring:(FVMQ)
    Temperature resistance :-60 C to 180 C,
    Performance: Oil resistance, abrasion resistance and water resistance.
    Medium: Water, gasoline, lubricating oil, hydraulic oil, silicone oil, gas

  • Fluororubber O-ring FKM

    Fluororubber O-ring FKM

    Fluororubber O-ring FKM
    Temperature resistance :-20 ℃ -260 ℃,
    Properties: WEATHER resistance, ozone resistance, chemical resistance, resistance to most oils and solvents, especially acids, aliPHatic hydrocarbons, aromatic hydrocarbons and animal and vegetable oils. Not recommended for ketones, low molecular weight esters and nitrate-containing mixtures, poor cold resistance.
    Application: It is often used in the working environment of high temperature resistance, chemical corrosion resistance and oil resistance. It is widely used in metallurgy, chemical industry, automobile, electric power and other industries
    Common colors: brown, green.
    Medium: resistant to strong acid and alkali liquid, oil

  • Nitrile O-ring

    Nitrile O-ring

    Nitrile O-ring:
    Temperature resistance:-40 degrees Celsius 120 degrees Celsius.
    Performance: oil resistance, wear resistance, heat resistance, solvent resistance and high pressure oil characteristics, but not suitable for polar solutions, such as ketones, ozone, nitrohydrocarbon.
    Application: Often used in fuel tank, lubricating oil and petroleum hydraulic oil, ethylene glycol hydraulic oil, dilipid lubricating oil, gasoline, water, silicon grease, silicone oil and other media. Medium: Water, gasoline, lubricating oil, hydraulic oil, silicone oil, gas

    Color:black

  • Silicone O-ring VWQ

    Silicone O-ring VWQ

    Temperature resistance :-40 degrees Celsius 20 degrees Celsius, Performance: environmental protection non-toxic, good elasticity, heat resistance, cold resistance, ozone resistance, atmospheric aging resistance, has good electrical insulation performance, tensile strength and wear resistance than the general rubber is poor, oil resistance.
    Application: Often used in household appliances, electrical appliances industry used seals or rubber parts, food machinery industry seals, and the human body has contact with various supplies seals.
    Color: white translucent, iron red.

  • Fluorinated Silicone Rubber

    Fluorinated Silicone Rubber

    FVMQ fluorosilicone O-ring in the maintenance of silicone material heat resistance, cold resistance, high voltage resistance, weathering resistance and other excellent properties, due to the introduction of fluorine groups, it also has organic fluorine material excellent resistance to hydrogen solvents, oil resistance, acid and alkaline resistance and lower surface energy performance.

  • Fluorine Rubber Plate

    Fluorine Rubber Plate

    Fluorine rubber seals, when used for engine sealing, can work at 200℃~250℃ for a long time, at 300 and short-term work, its working life can be the same as the engine repair life, up to 1000~5000 flight hours (time 5~10 years); Used in the chemical industry, can seal inorganic acid (such as 67% sulfuric acid at 140℃, concentrated hydrochloric acid at 70℃, and 30% nitric acid at ℃), organic solvents (such as chlorinated hydrocarbons, benzene, high aromatic gasoline) and other organic matter (such as butadiene, styrene, propylene, phenol, fatty acids at 275℃, etc.); For deep well production, it can withstand harsh working conditions of 149℃ and 420 atmospheres. When used for superheated steam seals, it can work in steam medium of 160~170℃ for a long time. In the production of monocrystalline silicon, commonly used fluorine rubber seals to seal high temperature (300℃) under the special medium – trichlorosilicon, silicon tetrachloride, gallium arsenide, phosphorus trichloride, trichloroethylene and 120℃ hydrochloric acid, etc.

  • Silicone Rubber Sheet

    Silicone Rubber Sheet

    Silicone rubber sheet is an industrial rubber sheet made of silicone as the main raw material. It can make gaskets, washers and seals, which are mainly used in food industry, machinery industry, electronics and electrical appliances, automobile industry, chemical light industry, metal and paint and other fields.
    Operating temperature: -60 ℃ -250 ℃
    Thickness: 1 mm – 10 mm
    Width: 1 m – 1.2 m
    Silicone plate can be punched gasket, gasket, seal.
    Product Features:
    1. Optional thickness,
    2, color tunability
    3, the simplicity of construction
    4. Stability of mass
    5, good recoil
    6, excellent skid resistance

  • Magnetic Flap Level Gauge

    Magnetic Flap Level Gauge

    Magnetic flap level gauge (also known as magnetic float level gauge) is developed according to the principle of buoyancy and magnetic coupling. When the liquid level in the measured container rises and falls, the magnetic float in the liquid level gauge tube also rises and falls, and the permanent magnetic steel in the float is transferred to the magnetic flip column indicator through magnetic coupling, driving the red and white flip columns to flip 180°. When the liquid level rises, the flip column changes from white to red, and when the liquid level falls, the flip column changes from red to white. The red and white junction of the indicator is the actual height of the liquid level inside the container, so as to achieve a clear indication of the liquid level.

  • Quartz Tube Double Color Level Gauge

    Quartz Tube Double Color Level Gauge

    Color quartz tube level gauge is the use of natural light in the liquid fold, reflection principle, with the help of red, green, in the measurement, the liquid phase display green, gas phase display red. Due to the large contrast of liquid and gas phase display, the instruction is clear and clear, so it is more favorable for remote operation and night inspection. Widely used in petroleum, chemical industry, electric power, metallurgy and other industries of all kinds of transparent liquid containers and boilers, such as water, gasoline, liquefied gas, liquid ammonia, propane, propylene, aromatic, acid and other oil and chemical raw materials level measurement. At the same time for the interface measurement of two different medium densities, a three-color interface quartz tube level gauge can be selected. Three-color interface quartz tube level gauge is designed by using the principle of buoyancy and gravity difference, quartz tube in the small float suspended in two kinds of medium part of the boundary, because the float is black, the upper and lower part of the liquid level color is different, so the display eye-catching. The problem of indistinguishable interface between two kinds of mixed media in petrochemical production

  • 4-1/4 inch Long Sight, 1/4 inch Thread Size, Buna-N Seal Union Coupling, Vented Oil-Level Indicators and Gauge

    4-1/4 inch Long Sight, 1/4 inch Thread Size, Buna-N Seal Union Coupling, Vented Oil-Level Indicators and Gauge

    ● Measuring range (installation center distance) : 200, 250, 300, 350, 400, 500 (MM) can be customized and extended
    ● Working pressure of the medium under test: 0.6mpa
    ● Working temperature of the medium under test: -10℃ ~ +150℃
    ● Interface thread: G3/8, G1/2, G3/4, M10*1, M14*1.5, M16*1.5, M20*1.5 (other specifications can be customized)
    ● Connection: external thread, internal thread, welding
    ● Main material: stainless steel 304, 316
    ● Glass material: Acrylic,ordinary glass tube, organic tube, quartz tube
    Characteristics of small glass tube level gauge
    ● Intuitive instrument
    ● Simple structure, easy maintenance

  • Small Glass Tube Level Gauge

    Small Glass Tube Level Gauge

    ● Measuring range (installation center distance) : 200, 250, 300, 350, 400, 500 (MM) can be customized and extended
    ● Working pressure of the medium under test: 0.6mpa
    ● Working temperature of the medium under test: -10℃ ~ +150℃
    ● Interface thread: G3/8, G1/2, G3/4, M10*1, M14*1.5, M16*1.5, M20*1.5 (other specifications can be customized)
    ● Connection: external thread, internal thread, welding
    ● Main material: stainless steel 304, 316
    ● Glass material: ordinary glass tube, organic tube, quartz tube
    Characteristics of small glass tube level gauge
    ● Intuitive instrument
    ● Simple structure, easy maintenance

  • Mini Liquid Level Gauge

    Mini Liquid Level Gauge

    ● Measuring range (installation center distance) : 200, 250, 300, 350, 400, 500 (MM) can be customized and extended
    ● Working pressure of the medium under test: 0.6mpa
    ● Working temperature of the medium under test: -10℃ ~ +150℃
    ● Interface thread: G3/8, G1/2, G3/4, M10*1, M14*1.5, M16*1.5, M20*1.5 (other specifications can be customized)
    ● Connection: external thread, internal thread, welding
    ● Main material: stainless steel 304, 316
    ● Glass material: ordinary glass tube, organic tube, quartz tube
    Characteristics of small glass tube level gauge
    ● Intuitive instrument
    ● Simple structure, easy maintenance

  • Oil Level Sight Gauge

    Oil Level Sight Gauge

    ● Measuring range (installation center distance) : 200, 250, 300, 350, 400, 500 (MM) can be customized and extended
    ● Working pressure of the medium under test: 0.6mpa
    ● Working temperature of the medium under test: -10℃ ~ +150℃
    ● Interface thread: G3/8, G1/2, G3/4, M10*1, M14*1.5, M16*1.5, M20*1.5 (other specifications can be customized)
    ● Connection: external thread, internal thread, welding
    ● Main material: stainless steel 304, 316
    ● Glass material: Acrylic,ordinary glass tube, organic tube, quartz tube
    Characteristics of small glass tube level gauge
    ● Intuitive instrument
    ● Simple structure, easy maintenance

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